Item #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: SCP-XXXX should be contained within a Large Containment Chamber and supplied with all substances necessary to sustain a standard domesticated cow.

Any personnel observing or involved with SCP-XXXX and its testing must remain isolated from society.

Description: SCP-XXXX is an anomalous object observed to take one of two forms. 50% of the population1 believe it to be a non-anomalous instance of Bos taurus taurus2, while the remaining 50%3 believe it to be an M60 tank.

Individuals in each group will interact with SCP-XXXX as if it is whatever they are perceiving, even if the actions would not be physically possible to members of the other group. Due to this, objects involved with SCP-XXXX can be perceived as taking different states by each group, posing a threat to the stability and continuity of the timeline.

Addendum XXXX.001: Testing Log
All instructions and equipment were supplied by automated systems to avoid bias.

Test 01: 0846

Procedure: D-42678-X is to enter the containment chamber of SCP-XXXX and make contact with the anomaly.


D-42678-X entered the containment chamber, made contact with SCP-XXXX and left the containment chamber.

Test 02: 0848

Procedure: After the events of Test 01, SCP-XXXX-X had moved to a position closer to the entrance of the containment chamber. D-42678-X was instructed to pick up a handful of grass pellets and feed them to SCP-XXXX.


D-42678-X picked up the grass pellets, entered the containment chamber, and fed them to SCP-XXXX. He then left the containment chamber.

Test 03: 0850

Procedure: A pocket knife was placed at the entrance of the containment chamber. D-42678-X was instructed to pick it up and pierce the skin of SCP-XXXX with it, then leave the containment chamber.


D-42678-X entered the chamber and assaulted SCP-XXXX. He was then mailed by the entity, suffering from fatal injuries. The cadaver was not removed from the containment chamber.

Test 01



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